java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label36_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:39:42,428 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:39:42,430 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:39:42,443 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:39:42,444 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:39:42,445 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:39:42,447 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:39:42,449 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:39:42,450 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:39:42,451 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:39:42,455 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:39:42,455 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:39:42,456 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:39:42,457 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:39:42,458 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:39:42,459 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:39:42,460 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:39:42,463 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:39:42,464 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:39:42,469 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:39:42,473 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:39:42,474 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:39:42,477 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:39:42,477 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:39:42,477 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:39:42,478 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:39:42,479 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:39:42,480 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:39:42,480 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:39:42,484 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:39:42,484 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:39:42,485 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:39:42,488 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:39:42,512 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:39:42,513 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:39:42,513 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:39:42,514 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:39:42,514 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:39:42,514 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:39:42,515 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:39:42,515 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:39:42,515 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:39:42,515 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:39:42,515 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:39:42,516 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:39:42,516 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:39:42,516 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:39:42,516 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:39:42,516 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:39:42,517 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:39:42,517 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:39:42,517 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:39:42,517 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:39:42,517 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:39:42,518 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:39:42,518 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:39:42,518 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:39:42,518 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:39:42,518 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:39:42,518 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:39:42,519 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:39:42,567 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:39:42,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:39:42,583 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:39:42,585 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:39:42,585 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:39:42,586 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label36_false-unreach-call.c [2018-10-24 14:39:42,639 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a50524c05/2fe5950e47c645c0bb5d2bd8608fef4e/FLAG0f96750d4 [2018-10-24 14:39:43,434 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:39:43,435 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label36_false-unreach-call.c [2018-10-24 14:39:43,466 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a50524c05/2fe5950e47c645c0bb5d2bd8608fef4e/FLAG0f96750d4 [2018-10-24 14:39:43,488 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a50524c05/2fe5950e47c645c0bb5d2bd8608fef4e [2018-10-24 14:39:43,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:39:43,502 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:39:43,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:39:43,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:39:43,507 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:39:43,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:39:43" (1/1) ... [2018-10-24 14:39:43,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ebb76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:43, skipping insertion in model container [2018-10-24 14:39:43,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:39:43" (1/1) ... [2018-10-24 14:39:43,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:39:43,674 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:39:44,766 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:39:44,770 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:39:45,217 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:39:45,246 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:39:45,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:45 WrapperNode [2018-10-24 14:39:45,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:39:45,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:39:45,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:39:45,248 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:39:45,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:45" (1/1) ... [2018-10-24 14:39:45,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:45" (1/1) ... [2018-10-24 14:39:45,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:39:45,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:39:45,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:39:45,761 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:39:45,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:45" (1/1) ... [2018-10-24 14:39:45,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:45" (1/1) ... [2018-10-24 14:39:45,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:45" (1/1) ... [2018-10-24 14:39:45,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:45" (1/1) ... [2018-10-24 14:39:45,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:45" (1/1) ... [2018-10-24 14:39:45,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:45" (1/1) ... [2018-10-24 14:39:46,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:45" (1/1) ... [2018-10-24 14:39:46,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:39:46,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:39:46,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:39:46,050 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:39:46,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:39:46,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:39:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:39:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:39:53,522 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:39:53,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:39:53 BoogieIcfgContainer [2018-10-24 14:39:53,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:39:53,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:39:53,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:39:53,528 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:39:53,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:39:43" (1/3) ... [2018-10-24 14:39:53,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b28ac2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:39:53, skipping insertion in model container [2018-10-24 14:39:53,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:45" (2/3) ... [2018-10-24 14:39:53,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b28ac2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:39:53, skipping insertion in model container [2018-10-24 14:39:53,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:39:53" (3/3) ... [2018-10-24 14:39:53,533 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label36_false-unreach-call.c [2018-10-24 14:39:53,544 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:39:53,554 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:39:53,573 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:39:53,618 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:39:53,619 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:39:53,619 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:39:53,619 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:39:53,620 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:39:53,620 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:39:53,620 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:39:53,620 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:39:53,620 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:39:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-24 14:39:53,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-24 14:39:53,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:39:53,676 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:39:53,678 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:39:53,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:39:53,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1880720510, now seen corresponding path program 1 times [2018-10-24 14:39:53,687 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:39:53,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:39:53,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:53,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:39:53,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:39:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:39:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:39:54,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:39:54,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:39:54,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:39:54,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:39:54,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:39:54,220 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-24 14:40:05,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:40:05,369 INFO L93 Difference]: Finished difference Result 2902 states and 5650 transitions. [2018-10-24 14:40:05,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:40:05,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-10-24 14:40:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:40:05,419 INFO L225 Difference]: With dead ends: 2902 [2018-10-24 14:40:05,420 INFO L226 Difference]: Without dead ends: 2137 [2018-10-24 14:40:05,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:40:05,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2018-10-24 14:40:05,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2137. [2018-10-24 14:40:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2018-10-24 14:40:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3734 transitions. [2018-10-24 14:40:05,610 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3734 transitions. Word has length 28 [2018-10-24 14:40:05,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:40:05,610 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3734 transitions. [2018-10-24 14:40:05,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:40:05,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3734 transitions. [2018-10-24 14:40:05,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 14:40:05,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:40:05,618 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:40:05,618 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:40:05,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:40:05,619 INFO L82 PathProgramCache]: Analyzing trace with hash -2131500312, now seen corresponding path program 1 times [2018-10-24 14:40:05,620 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:40:05,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:40:05,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:05,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:05,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:40:06,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:40:06,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:40:06,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:40:06,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:40:06,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:40:06,012 INFO L87 Difference]: Start difference. First operand 2137 states and 3734 transitions. Second operand 4 states. [2018-10-24 14:40:19,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:40:19,005 INFO L93 Difference]: Finished difference Result 7730 states and 13074 transitions. [2018-10-24 14:40:19,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:40:19,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2018-10-24 14:40:19,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:40:19,035 INFO L225 Difference]: With dead ends: 7730 [2018-10-24 14:40:19,035 INFO L226 Difference]: Without dead ends: 5595 [2018-10-24 14:40:19,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:40:19,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2018-10-24 14:40:19,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5595. [2018-10-24 14:40:19,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5595 states. [2018-10-24 14:40:19,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5595 states to 5595 states and 8527 transitions. [2018-10-24 14:40:19,144 INFO L78 Accepts]: Start accepts. Automaton has 5595 states and 8527 transitions. Word has length 98 [2018-10-24 14:40:19,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:40:19,144 INFO L481 AbstractCegarLoop]: Abstraction has 5595 states and 8527 transitions. [2018-10-24 14:40:19,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:40:19,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5595 states and 8527 transitions. [2018-10-24 14:40:19,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-24 14:40:19,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:40:19,155 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:40:19,155 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:40:19,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:40:19,156 INFO L82 PathProgramCache]: Analyzing trace with hash 178858492, now seen corresponding path program 1 times [2018-10-24 14:40:19,156 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:40:19,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:40:19,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:19,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:19,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:19,821 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-10-24 14:40:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-24 14:40:20,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:40:20,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:40:20,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:40:20,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:40:20,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:40:20,042 INFO L87 Difference]: Start difference. First operand 5595 states and 8527 transitions. Second operand 5 states. [2018-10-24 14:40:28,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:40:28,382 INFO L93 Difference]: Finished difference Result 16025 states and 24804 transitions. [2018-10-24 14:40:28,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:40:28,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 281 [2018-10-24 14:40:28,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:40:28,431 INFO L225 Difference]: With dead ends: 16025 [2018-10-24 14:40:28,431 INFO L226 Difference]: Without dead ends: 10432 [2018-10-24 14:40:28,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:40:28,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10432 states. [2018-10-24 14:40:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10432 to 9741. [2018-10-24 14:40:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9741 states. [2018-10-24 14:40:28,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9741 states to 9741 states and 13118 transitions. [2018-10-24 14:40:28,663 INFO L78 Accepts]: Start accepts. Automaton has 9741 states and 13118 transitions. Word has length 281 [2018-10-24 14:40:28,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:40:28,664 INFO L481 AbstractCegarLoop]: Abstraction has 9741 states and 13118 transitions. [2018-10-24 14:40:28,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:40:28,665 INFO L276 IsEmpty]: Start isEmpty. Operand 9741 states and 13118 transitions. [2018-10-24 14:40:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-24 14:40:28,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:40:28,679 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:40:28,680 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:40:28,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:40:28,680 INFO L82 PathProgramCache]: Analyzing trace with hash -141569346, now seen corresponding path program 1 times [2018-10-24 14:40:28,680 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:40:28,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:40:28,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:28,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:28,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:29,297 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 14:40:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 205 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:40:29,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:40:29,498 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:40:29,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:29,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:40:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2018-10-24 14:40:29,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:40:29,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:40:29,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:40:29,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:40:29,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:40:29,821 INFO L87 Difference]: Start difference. First operand 9741 states and 13118 transitions. Second operand 6 states. [2018-10-24 14:40:44,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:40:44,661 INFO L93 Difference]: Finished difference Result 32620 states and 47881 transitions. [2018-10-24 14:40:44,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:40:44,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 370 [2018-10-24 14:40:44,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:40:44,726 INFO L225 Difference]: With dead ends: 32620 [2018-10-24 14:40:44,727 INFO L226 Difference]: Without dead ends: 22188 [2018-10-24 14:40:44,739 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 370 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:40:44,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22188 states. [2018-10-24 14:40:45,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22188 to 17339. [2018-10-24 14:40:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17339 states. [2018-10-24 14:40:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17339 states to 17339 states and 20527 transitions. [2018-10-24 14:40:45,087 INFO L78 Accepts]: Start accepts. Automaton has 17339 states and 20527 transitions. Word has length 370 [2018-10-24 14:40:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:40:45,088 INFO L481 AbstractCegarLoop]: Abstraction has 17339 states and 20527 transitions. [2018-10-24 14:40:45,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:40:45,089 INFO L276 IsEmpty]: Start isEmpty. Operand 17339 states and 20527 transitions. [2018-10-24 14:40:45,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1229 [2018-10-24 14:40:45,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:40:45,161 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:40:45,162 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:40:45,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:40:45,162 INFO L82 PathProgramCache]: Analyzing trace with hash -723761810, now seen corresponding path program 1 times [2018-10-24 14:40:45,163 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:40:45,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:40:45,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:45,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:45,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:40:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:46,523 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 14:40:46,873 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-10-24 14:40:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 696 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:40:50,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:40:50,086 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:40:50,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:40:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:40:50,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:40:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2018-10-24 14:40:51,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:40:51,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2018-10-24 14:40:51,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 14:40:51,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 14:40:51,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-24 14:40:51,843 INFO L87 Difference]: Start difference. First operand 17339 states and 20527 transitions. Second operand 11 states. [2018-10-24 14:41:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:11,410 INFO L93 Difference]: Finished difference Result 58406 states and 70839 transitions. [2018-10-24 14:41:11,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 14:41:11,410 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1228 [2018-10-24 14:41:11,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:11,489 INFO L225 Difference]: With dead ends: 58406 [2018-10-24 14:41:11,490 INFO L226 Difference]: Without dead ends: 41760 [2018-10-24 14:41:11,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1228 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2018-10-24 14:41:11,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41760 states. [2018-10-24 14:41:11,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41760 to 37545. [2018-10-24 14:41:11,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37545 states. [2018-10-24 14:41:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37545 states to 37545 states and 43003 transitions. [2018-10-24 14:41:12,000 INFO L78 Accepts]: Start accepts. Automaton has 37545 states and 43003 transitions. Word has length 1228 [2018-10-24 14:41:12,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:12,002 INFO L481 AbstractCegarLoop]: Abstraction has 37545 states and 43003 transitions. [2018-10-24 14:41:12,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 14:41:12,003 INFO L276 IsEmpty]: Start isEmpty. Operand 37545 states and 43003 transitions. [2018-10-24 14:41:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1440 [2018-10-24 14:41:12,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:12,119 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:12,120 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:12,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:12,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1433104334, now seen corresponding path program 1 times [2018-10-24 14:41:12,120 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:12,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:12,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:12,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:12,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1973 backedges. 1407 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2018-10-24 14:41:13,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:13,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:41:13,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:41:13,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:41:13,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:13,784 INFO L87 Difference]: Start difference. First operand 37545 states and 43003 transitions. Second operand 4 states. [2018-10-24 14:41:19,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:19,030 INFO L93 Difference]: Finished difference Result 104982 states and 122289 transitions. [2018-10-24 14:41:19,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:41:19,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1439 [2018-10-24 14:41:19,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:19,147 INFO L225 Difference]: With dead ends: 104982 [2018-10-24 14:41:19,147 INFO L226 Difference]: Without dead ends: 68130 [2018-10-24 14:41:19,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:19,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68130 states. [2018-10-24 14:41:19,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68130 to 67344. [2018-10-24 14:41:19,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67344 states. [2018-10-24 14:41:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67344 states to 67344 states and 75240 transitions. [2018-10-24 14:41:19,974 INFO L78 Accepts]: Start accepts. Automaton has 67344 states and 75240 transitions. Word has length 1439 [2018-10-24 14:41:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:19,976 INFO L481 AbstractCegarLoop]: Abstraction has 67344 states and 75240 transitions. [2018-10-24 14:41:19,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:41:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 67344 states and 75240 transitions. [2018-10-24 14:41:20,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1454 [2018-10-24 14:41:20,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:20,048 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:20,048 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:20,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:20,049 INFO L82 PathProgramCache]: Analyzing trace with hash 291581391, now seen corresponding path program 1 times [2018-10-24 14:41:20,049 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:20,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:20,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:20,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:20,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:22,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2015 backedges. 1063 proven. 0 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2018-10-24 14:41:22,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:22,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:41:22,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:41:22,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:41:22,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:22,220 INFO L87 Difference]: Start difference. First operand 67344 states and 75240 transitions. Second operand 4 states. [2018-10-24 14:41:27,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:27,614 INFO L93 Difference]: Finished difference Result 167163 states and 187283 transitions. [2018-10-24 14:41:27,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:41:27,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1453 [2018-10-24 14:41:27,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:27,738 INFO L225 Difference]: With dead ends: 167163 [2018-10-24 14:41:27,738 INFO L226 Difference]: Without dead ends: 88741 [2018-10-24 14:41:27,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:27,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88741 states. [2018-10-24 14:41:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88741 to 86611. [2018-10-24 14:41:28,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86611 states. [2018-10-24 14:41:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86611 states to 86611 states and 93048 transitions. [2018-10-24 14:41:28,662 INFO L78 Accepts]: Start accepts. Automaton has 86611 states and 93048 transitions. Word has length 1453 [2018-10-24 14:41:28,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:28,663 INFO L481 AbstractCegarLoop]: Abstraction has 86611 states and 93048 transitions. [2018-10-24 14:41:28,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:41:28,663 INFO L276 IsEmpty]: Start isEmpty. Operand 86611 states and 93048 transitions. [2018-10-24 14:41:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1502 [2018-10-24 14:41:28,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:28,723 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:28,723 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:28,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:28,723 INFO L82 PathProgramCache]: Analyzing trace with hash -4855802, now seen corresponding path program 1 times [2018-10-24 14:41:28,724 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:28,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:28,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:28,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:28,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:29,645 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:41:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 1537 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2018-10-24 14:41:30,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:30,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:41:30,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:41:30,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:41:30,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:30,823 INFO L87 Difference]: Start difference. First operand 86611 states and 93048 transitions. Second operand 4 states. [2018-10-24 14:41:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:36,578 INFO L93 Difference]: Finished difference Result 198787 states and 213388 transitions. [2018-10-24 14:41:36,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:41:36,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1501 [2018-10-24 14:41:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:36,703 INFO L225 Difference]: With dead ends: 198787 [2018-10-24 14:41:36,703 INFO L226 Difference]: Without dead ends: 112869 [2018-10-24 14:41:36,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:36,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112869 states. [2018-10-24 14:41:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112869 to 110796. [2018-10-24 14:41:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110796 states. [2018-10-24 14:41:38,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110796 states to 110796 states and 117591 transitions. [2018-10-24 14:41:38,073 INFO L78 Accepts]: Start accepts. Automaton has 110796 states and 117591 transitions. Word has length 1501 [2018-10-24 14:41:38,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:38,073 INFO L481 AbstractCegarLoop]: Abstraction has 110796 states and 117591 transitions. [2018-10-24 14:41:38,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:41:38,073 INFO L276 IsEmpty]: Start isEmpty. Operand 110796 states and 117591 transitions. [2018-10-24 14:41:38,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1570 [2018-10-24 14:41:38,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:38,143 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:38,144 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:38,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:38,144 INFO L82 PathProgramCache]: Analyzing trace with hash -202349167, now seen corresponding path program 1 times [2018-10-24 14:41:38,144 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:38,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:38,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:38,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:38,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 1767 proven. 0 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2018-10-24 14:41:40,632 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:40,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:41:40,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:41:40,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:41:40,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:40,634 INFO L87 Difference]: Start difference. First operand 110796 states and 117591 transitions. Second operand 4 states. [2018-10-24 14:41:46,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:46,190 INFO L93 Difference]: Finished difference Result 242330 states and 257754 transitions. [2018-10-24 14:41:46,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:41:46,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1569 [2018-10-24 14:41:46,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:46,320 INFO L225 Difference]: With dead ends: 242330 [2018-10-24 14:41:46,321 INFO L226 Difference]: Without dead ends: 132227 [2018-10-24 14:41:46,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132227 states. [2018-10-24 14:41:47,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132227 to 119088. [2018-10-24 14:41:47,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119088 states. [2018-10-24 14:41:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119088 states to 119088 states and 126270 transitions. [2018-10-24 14:41:47,376 INFO L78 Accepts]: Start accepts. Automaton has 119088 states and 126270 transitions. Word has length 1569 [2018-10-24 14:41:47,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:47,376 INFO L481 AbstractCegarLoop]: Abstraction has 119088 states and 126270 transitions. [2018-10-24 14:41:47,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:41:47,377 INFO L276 IsEmpty]: Start isEmpty. Operand 119088 states and 126270 transitions. [2018-10-24 14:41:47,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1624 [2018-10-24 14:41:47,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:47,439 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:47,439 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:47,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:47,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1468844574, now seen corresponding path program 1 times [2018-10-24 14:41:47,440 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:47,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:47,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:47,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:47,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:48,881 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2018-10-24 14:41:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2881 backedges. 1615 proven. 625 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2018-10-24 14:41:50,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:41:50,993 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:41:51,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:51,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:41:53,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2881 backedges. 1944 proven. 0 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2018-10-24 14:41:53,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:41:53,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-24 14:41:53,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:41:53,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:41:53,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:41:53,031 INFO L87 Difference]: Start difference. First operand 119088 states and 126270 transitions. Second operand 8 states. [2018-10-24 14:42:07,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:07,242 INFO L93 Difference]: Finished difference Result 246462 states and 261183 transitions. [2018-10-24 14:42:07,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 14:42:07,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1623 [2018-10-24 14:42:07,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:07,380 INFO L225 Difference]: With dead ends: 246462 [2018-10-24 14:42:07,380 INFO L226 Difference]: Without dead ends: 115608 [2018-10-24 14:42:07,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1640 GetRequests, 1627 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-10-24 14:42:07,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115608 states. [2018-10-24 14:42:08,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115608 to 114917. [2018-10-24 14:42:08,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114917 states. [2018-10-24 14:42:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114917 states to 114917 states and 119074 transitions. [2018-10-24 14:42:08,488 INFO L78 Accepts]: Start accepts. Automaton has 114917 states and 119074 transitions. Word has length 1623 [2018-10-24 14:42:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:08,489 INFO L481 AbstractCegarLoop]: Abstraction has 114917 states and 119074 transitions. [2018-10-24 14:42:08,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 14:42:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 114917 states and 119074 transitions. [2018-10-24 14:42:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1680 [2018-10-24 14:42:08,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:08,550 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:08,550 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:08,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:08,551 INFO L82 PathProgramCache]: Analyzing trace with hash 356521755, now seen corresponding path program 1 times [2018-10-24 14:42:08,551 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:08,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:08,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:08,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:08,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3302 backedges. 2026 proven. 901 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2018-10-24 14:42:14,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:42:14,289 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:42:14,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:14,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:42:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3302 backedges. 2181 proven. 0 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2018-10-24 14:42:15,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:42:15,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-24 14:42:15,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 14:42:15,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 14:42:15,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:42:15,871 INFO L87 Difference]: Start difference. First operand 114917 states and 119074 transitions. Second operand 12 states. [2018-10-24 14:42:19,720 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-24 14:42:32,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:32,531 INFO L93 Difference]: Finished difference Result 268861 states and 278524 transitions. [2018-10-24 14:42:32,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-24 14:42:32,532 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1679 [2018-10-24 14:42:32,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:32,708 INFO L225 Difference]: With dead ends: 268861 [2018-10-24 14:42:32,708 INFO L226 Difference]: Without dead ends: 154637 [2018-10-24 14:42:32,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1720 GetRequests, 1691 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2018-10-24 14:42:32,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154637 states. [2018-10-24 14:42:33,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154637 to 109389. [2018-10-24 14:42:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109389 states. [2018-10-24 14:42:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109389 states to 109389 states and 112234 transitions. [2018-10-24 14:42:33,925 INFO L78 Accepts]: Start accepts. Automaton has 109389 states and 112234 transitions. Word has length 1679 [2018-10-24 14:42:33,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:33,926 INFO L481 AbstractCegarLoop]: Abstraction has 109389 states and 112234 transitions. [2018-10-24 14:42:33,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 14:42:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 109389 states and 112234 transitions. [2018-10-24 14:42:33,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1686 [2018-10-24 14:42:33,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:33,976 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:33,976 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:33,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:33,977 INFO L82 PathProgramCache]: Analyzing trace with hash -15098688, now seen corresponding path program 1 times [2018-10-24 14:42:33,977 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:33,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:33,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:33,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:33,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2961 backedges. 2190 proven. 70 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2018-10-24 14:42:36,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:42:36,445 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:42:36,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:36,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:42:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2961 backedges. 2190 proven. 70 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2018-10-24 14:42:38,984 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:42:38,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-24 14:42:38,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:42:38,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:42:38,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:42:38,987 INFO L87 Difference]: Start difference. First operand 109389 states and 112234 transitions. Second operand 4 states. [2018-10-24 14:42:45,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:45,219 INFO L93 Difference]: Finished difference Result 227070 states and 232970 transitions. [2018-10-24 14:42:45,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:42:45,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1685 [2018-10-24 14:42:45,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:45,340 INFO L225 Difference]: With dead ends: 227070 [2018-10-24 14:42:45,340 INFO L226 Difference]: Without dead ends: 118374 [2018-10-24 14:42:45,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1689 GetRequests, 1685 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:42:45,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118374 states. [2018-10-24 14:42:46,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118374 to 110770. [2018-10-24 14:42:46,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110770 states. [2018-10-24 14:42:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110770 states to 110770 states and 113493 transitions. [2018-10-24 14:42:46,523 INFO L78 Accepts]: Start accepts. Automaton has 110770 states and 113493 transitions. Word has length 1685 [2018-10-24 14:42:46,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:46,523 INFO L481 AbstractCegarLoop]: Abstraction has 110770 states and 113493 transitions. [2018-10-24 14:42:46,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:42:46,524 INFO L276 IsEmpty]: Start isEmpty. Operand 110770 states and 113493 transitions. [2018-10-24 14:42:46,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1753 [2018-10-24 14:42:46,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:46,599 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:46,599 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:46,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:46,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1394215948, now seen corresponding path program 1 times [2018-10-24 14:42:46,600 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:46,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:46,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:46,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:46,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:48,004 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 14:42:48,307 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-24 14:42:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3295 backedges. 1776 proven. 818 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2018-10-24 14:42:51,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:42:51,136 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:42:51,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:51,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:42:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3295 backedges. 1892 proven. 0 refuted. 0 times theorem prover too weak. 1403 trivial. 0 not checked. [2018-10-24 14:42:52,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:42:52,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-10-24 14:42:52,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 14:42:52,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 14:42:52,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:42:52,987 INFO L87 Difference]: Start difference. First operand 110770 states and 113493 transitions. Second operand 10 states. [2018-10-24 14:43:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:43:16,661 INFO L93 Difference]: Finished difference Result 368135 states and 377604 transitions. [2018-10-24 14:43:16,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-24 14:43:16,661 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1752 [2018-10-24 14:43:16,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:43:16,932 INFO L225 Difference]: With dead ends: 368135 [2018-10-24 14:43:16,932 INFO L226 Difference]: Without dead ends: 258058 [2018-10-24 14:43:17,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1801 GetRequests, 1772 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2018-10-24 14:43:17,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258058 states. [2018-10-24 14:43:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258058 to 111764. [2018-10-24 14:43:18,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111764 states. [2018-10-24 14:43:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111764 states to 111764 states and 114007 transitions. [2018-10-24 14:43:19,066 INFO L78 Accepts]: Start accepts. Automaton has 111764 states and 114007 transitions. Word has length 1752 [2018-10-24 14:43:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:43:19,067 INFO L481 AbstractCegarLoop]: Abstraction has 111764 states and 114007 transitions. [2018-10-24 14:43:19,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 14:43:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 111764 states and 114007 transitions. [2018-10-24 14:43:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1810 [2018-10-24 14:43:19,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:43:19,119 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:43:19,119 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:43:19,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:43:19,120 INFO L82 PathProgramCache]: Analyzing trace with hash 922679935, now seen corresponding path program 1 times [2018-10-24 14:43:19,120 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:43:19,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:43:19,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:19,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:43:19,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:43:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3707 backedges. 2257 proven. 0 refuted. 0 times theorem prover too weak. 1450 trivial. 0 not checked. [2018-10-24 14:43:23,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:43:23,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:43:23,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:43:23,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:43:23,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:43:23,776 INFO L87 Difference]: Start difference. First operand 111764 states and 114007 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 14:43:26,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:43:26,172 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:43:26,178 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:43:26,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:43:26 BoogieIcfgContainer [2018-10-24 14:43:26,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:43:26,180 INFO L168 Benchmark]: Toolchain (without parser) took 222679.09 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 14:43:26,181 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:43:26,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1744.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:43:26,182 INFO L168 Benchmark]: Boogie Procedure Inliner took 512.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -908.2 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:43:26,183 INFO L168 Benchmark]: Boogie Preprocessor took 289.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:43:26,184 INFO L168 Benchmark]: RCFGBuilder took 7473.60 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 532.5 MB). Peak memory consumption was 532.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:43:26,185 INFO L168 Benchmark]: TraceAbstraction took 212654.75 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 3.1 GB in the end (delta: -1.5 GB). Peak memory consumption was 851.6 MB. Max. memory is 7.1 GB. [2018-10-24 14:43:26,189 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1744.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 512.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -908.2 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 289.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7473.60 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 532.5 MB). Peak memory consumption was 532.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212654.75 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 3.1 GB in the end (delta: -1.5 GB). Peak memory consumption was 851.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 90). Cancelled while BasicCegarLoop was constructing difference of abstraction (111764states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (19463 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 212.5s OverallTime, 14 OverallIterations, 9 TraceHistogramMax, 154.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6339 SDtfs, 62303 SDslu, 1861 SDs, 0 SdLazy, 104750 SolverSat, 16991 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 119.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8514 GetRequests, 8387 SyntacticMatches, 16 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119088occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 10.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 227720 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 20.9s InterpolantComputationTime, 24852 NumberOfCodeBlocks, 24852 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 24832 ConstructedInterpolants, 0 QuantifiedInterpolants, 88745419 SizeOfPredicates, 2 NumberOfNonLiveVariables, 9557 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 20 InterpolantComputations, 13 PerfectInterpolantSequences, 37216/40067 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown